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As simple as that. If your Perl is in: /usr/bin/perl, then just copy and paste the text below in a file (e.g. my_prog.pl), make my_prog.pl executable (chmod u+x my_prog.pl) and execure this (./my_prog.pl) .
I hope my comments will allow you to adapt this small script according to your needs.
---- #!/usr/bin/perl
###########################
#### This is how you open the file ####
###########################
# First define the "record delimiter", if you wish. Options:
# $/ = "\n" # One line is one record! This is the default, no need to be defined.
# $/ = "\n\n" # An enpty line is the record delimiter (useful for mail headers, etc.)
# $/ = "you_name_it!" # According to your specific problem.
# try opening the file for reading and associate it with the
# "File Pointer" FP. If you fail the msg below will be printed
# and the program will halt.
open (FP, '/etc/hosts') or die('Cannot open file for reading');
#################################
#### This is how you store the file in arrary ####
#################################
# Read the file; here record=line.
my @records = ;
# and do not forget to close FP
close FP;
#######################
#### This is how you test it ####
#######################
# Print them, just for testing
foreach my $record (@records) {
chomp $record; # Get rid of the trailing "\n" that apears in each line
$record = "[$record]"; # Wrap the record in [] for the sake of presentation
print "$record\n";
}
----
What else can I help you with?
What is an Array and to use Array in Action script?
Array is a ranged variable, using it is required by many actions.. like where you going to processing data from a file where there is n lines in a file and you want to get one line of it.. ex: if variable $line is an array of lines in a text file: $line[1] is second line of the file... just keep it in mind arrays starts from zero :) it means line 1 of the file will be accessed with $line[0];
How can you search an array element in a file?
Logic to search element in array Input size and elements in array from user. ... Input number to search from user in some variable say toSearch . Define a flag variable as found = 0 . ... Run loop from 0 to size . ... Inside loop check if current array element is equal to searched number or not. To learn more about data science please visit- Learnbay.co
Is it true that passing data by reference enables you to change the value stored in a variable in one file using a function in another file?
Yes, passing a variable by reference gives you a pointer to the original variable, meaning you can change its value from within the function being called and the change will affect the original variable.
What is tunable array?
Arrays are the cheapest data structures, without much overhead compare to other data structures. Basically in array, we have four types i.e1. Static array - array size known at compile time.// example code snippet:char array[10];2. Dynamic array - array size known at begging of execution time.//example code snippet:char *array;int num_elements;//Dynamic memory allocation using malloc library call which in turn uses "brk" // or "sbrk" system call under unixarray = (char *)malloc (num_elements * sizeof(char));3. Stretchable array- array size can be stretched(modified) during execution time.//example code snippet.char *array;int num_elements;array = (char *)malloc (num_elements * sizeof(char));//Modify the memory allocation during execution time using realloc library callarray = realloc (array, new_value);4. Tunable array- array size known at link time.Suppose consider you have one object file called sample.o(compiled sample.c)and header file called sample.h.ISV's (Independent software vendors) usually won't provide you the source code(In case of proprietary software), instead they will provide you the object file and one corresponding header file which contains some symbolic literals (some # define constants). so that you can change the symbolic literals in header file which takes necessary action when you compile both file together.//example snippet code:In sample.cchar arr[MAX_SIZE];In sample.h# define MAX_SIZESuppose now if you change the symbolic literal "MAX_SIZE"in header file sample.h that will affect the size of the array arr at link time.Basically static array's are fall under the category of "Static Memory allocation" and remaining all will fall under "Dynamic Memory allocation".
Why array does not store the data permnantly?
Arrays, just as normal variables, store information in RAM memory. When power is turned off, the contents of RAM memory get lost. For permanent storage, you'll have to write information to a file, or access a database.
What is the best way to write an array to a file in PHP?
The serialize() function is used to create a storable representation of a variable in PHP.To store an array to a file, you first use the serialize() function to change an array into a string. Save the string in a file using file I/O, so fwrite() or a similar function. When reading it use unserialize() to get the original array again.
What is an Array and to use Array in Action script?
Array is a ranged variable, using it is required by many actions.. like where you going to processing data from a file where there is n lines in a file and you want to get one line of it.. ex: if variable $line is an array of lines in a text file: $line[1] is second line of the file... just keep it in mind arrays starts from zero :) it means line 1 of the file will be accessed with $line[0];
Under what circumstances is a file more useful than an array?
For example: if you want to store data on a disk, it will be a file, not an array.
How can you search an array element in a file?
Logic to search element in array Input size and elements in array from user. ... Input number to search from user in some variable say toSearch . Define a flag variable as found = 0 . ... Run loop from 0 to size . ... Inside loop check if current array element is equal to searched number or not. To learn more about data science please visit- Learnbay.co
How do you stores images in an array using java?
File file=new File("c:\\Time.jpg"); PreparedStatement ps=connection.prepareStatement("insert into Table1 (image_id, image_data)...
Php array to xml file?
If you mean taking an array and making an xml file out of it then you would need to dump the array information into the xml file. $fp = fopen(filename, "a"); $str = <author>$array['author']</author> fwrite($fp,$str); fclose($fp); that way it will add the contents to the end of thhe file
Is it true that passing data by reference enables you to change the value stored in a variable in one file using a function in another file?
Yes, passing a variable by reference gives you a pointer to the original variable, meaning you can change its value from within the function being called and the change will affect the original variable.
How can write a c program to store students record in a file?
Write a console based C++ program that reads student information from a text file, build an array of objects of type class StudentInfo,
What does the term raid file recovery mean?
RAID is the acronym for redundant array of independant discs, this refers to the way computers store information and programmes. Sometimes a file for a particular progamme is corrupt or missing, by tracing elements of the file it can sometimes be restored.
How do you store pdf file to database using PHP?
Files cannot be directly stored in a MySQL database. However, a path to the file or the contents of the file can.
Write a shell program using if-the-else to test whether a variable name is a directory or a file?
see : Write_a_shell_program_using_the_if-the-else_to_test_whether_a_variable_name_is_a_directory_or_a_file
What is tunable array?
Arrays are the cheapest data structures, without much overhead compare to other data structures. Basically in array, we have four types i.e1. Static array - array size known at compile time.// example code snippet:char array[10];2. Dynamic array - array size known at begging of execution time.//example code snippet:char *array;int num_elements;//Dynamic memory allocation using malloc library call which in turn uses "brk" // or "sbrk" system call under unixarray = (char *)malloc (num_elements * sizeof(char));3. Stretchable array- array size can be stretched(modified) during execution time.//example code snippet.char *array;int num_elements;array = (char *)malloc (num_elements * sizeof(char));//Modify the memory allocation during execution time using realloc library callarray = realloc (array, new_value);4. Tunable array- array size known at link time.Suppose consider you have one object file called sample.o(compiled sample.c)and header file called sample.h.ISV's (Independent software vendors) usually won't provide you the source code(In case of proprietary software), instead they will provide you the object file and one corresponding header file which contains some symbolic literals (some # define constants). so that you can change the symbolic literals in header file which takes necessary action when you compile both file together.//example snippet code:In sample.cchar arr[MAX_SIZE];In sample.h# define MAX_SIZESuppose now if you change the symbolic literal "MAX_SIZE"in header file sample.h that will affect the size of the array arr at link time.Basically static array's are fall under the category of "Static Memory allocation" and remaining all will fall under "Dynamic Memory allocation".
